--- title: "Miami (MIA) to Seattle (SEA) flights: who flies it" description: "American Airlines, Delta Air Lines and Alaska Airlines fly nonstop from MIA to SEA, about 26 flights a week. Upgrade and award space by date on 2LNR, next 14 days free." canonical: "https://2lnr.com/routes/mia-sea" url: "https://2lnr.com/routes/mia-sea.md" date_modified: "2026-10-18T05:10:47Z" --- # Miami to Seattle (MIA-SEA): nonstop upgrade & award space American Airlines, Delta Air Lines, and Alaska Airlines fly nonstop between Miami (MIA) and Seattle (SEA), roughly 26 times a week. The timetable below shows the nonstop scheduled at 6h 41m to 6h 53m for the 2,721 miles. 2LNR checks confirmed upgrade and award space on American Airlines, Delta Air Lines, and Alaska Airlines flights on this route, so you can see which departures have space before you book. Schedule last confirmed October 18, 2026. Departure times come from 2LNR's schedule data; confirm with the airline before you book. Updated October 23, 2026. See MIA to SEA on the interactive map [Get started free](https://2lnr.com/login) 26 Flights a week, 4-week average 6h 41m to 6h 53m Scheduled flight time 2,721 mi Nonstop distance Free To get started ## Miami to Seattle flight schedule Scheduled nonstop departures for MIA to SEA starting October 22, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book. Scheduled nonstop departures from Miami (MIA) to Seattle (SEA) | Date | Flight | Airline | Departs MIA | Arrives SEA | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Thu, Oct 22 | DL 564 | Delta Air Lines | 18:05 | 21:58 | 6h 53m | [Airbus A321neo family](https://2lnr.com/seatmaps/dl/a321neo.md) | | Thu, Oct 22 | DL 506 | Delta Air Lines | 18:15 | 22:00 | 6h 45m | Airbus A321neo family | | Thu, Oct 22 | AS 305 | Alaska Airlines, Inc. | 18:18 | 21:59 | 6h 41m | [Boeing 737 MAX 9](https://2lnr.com/seatmaps/as/737-max-9.md) | | Thu, Oct 22 | AA 3252 | American Airlines | 20:15 | 23:59 | 6h 44m | [Airbus A321neo family](https://2lnr.com/seatmaps/aa/a321neo.md) | | Fri, Oct 23 | DL 564 | Delta Air Lines | 18:05 | 21:58 | 6h 53m | Airbus A321neo family | | Fri, Oct 23 | DL 506 | Delta Air Lines | 18:15 | 22:00 | 6h 45m | Airbus A321neo family | | Fri, Oct 23 | AS 305 | Alaska Airlines, Inc. | 18:18 | 21:59 | 6h 41m | Boeing 737 MAX 9 | | Fri, Oct 23 | AA 3252 | American Airlines | 20:15 | 23:59 | 6h 44m | Airbus A321neo family | | Sat, Oct 24 | DL 564 | Delta Air Lines | 18:05 | 21:58 | 6h 53m | Airbus A321neo family | | Sat, Oct 24 | DL 506 | Delta Air Lines | 18:15 | 22:00 | 6h 45m | Airbus A321neo family | | Sat, Oct 24 | AS 305 | Alaska Airlines, Inc. | 18:18 | 21:59 | 6h 41m | Boeing 737 MAX 9 | | Sat, Oct 24 | AA 3252 | American Airlines | 20:15 | 23:59 | 6h 44m | Airbus A321neo family | | Sun, Oct 25 | DL 564 | Delta Air Lines | 18:05 | 21:58 | 6h 53m | Airbus A321neo family | | Sun, Oct 25 | DL 506 | Delta Air Lines | 18:15 | 22:00 | 6h 45m | Airbus A321neo family | | Sun, Oct 25 | AS 305 | Alaska Airlines, Inc. | 18:18 | 21:59 | 6h 41m | Boeing 737 MAX 9 | | Sun, Oct 25 | AA 3252 | American Airlines | 20:15 | 23:59 | 6h 44m | Airbus A321neo family | | Mon, Oct 26 | DL 564 | Delta Air Lines | 18:05 | 21:58 | 6h 53m | Airbus A321neo family | | Mon, Oct 26 | DL 506 | Delta Air Lines | 18:15 | 22:00 | 6h 45m | Airbus A321neo family | | Mon, Oct 26 | AS 305 | Alaska Airlines, Inc. | 18:18 | 21:59 | 6h 41m | Boeing 737 MAX 9 | | Mon, Oct 26 | AA 3252 | American Airlines | 20:15 | 23:59 | 6h 44m | Airbus A321neo family | | Tue, Oct 27 | DL 564 | Delta Air Lines | 18:05 | 21:58 | 6h 53m | Airbus A321neo family | | Tue, Oct 27 | DL 506 | Delta Air Lines | 18:15 | 22:00 | 6h 45m | Airbus A321neo family | | Tue, Oct 27 | AS 305 | Alaska Airlines, Inc. | 18:18 | 21:59 | 6h 41m | Boeing 737 MAX 9 | | Tue, Oct 27 | AA 3252 | American Airlines | 20:15 | 23:59 | 6h 44m | Airbus A321neo family | | Wed, Oct 28 | DL 564 | Delta Air Lines | 18:05 | 21:58 | 6h 53m | Airbus A321neo family | | Wed, Oct 28 | DL 506 | Delta Air Lines | 18:15 | 22:00 | 6h 45m | Airbus A321neo family | | Wed, Oct 28 | AS 305 | Alaska Airlines, Inc. | 18:18 | 21:59 | 6h 41m | [Boeing 737-900](https://2lnr.com/seatmaps/as/737-900.md) | | Wed, Oct 28 | AA 3252 | American Airlines | 20:15 | 23:59 | 6h 44m | Airbus A321neo family | Showing all 28 scheduled MIA to SEA departures across 7 days with service, starting October 22, 2026. Later dates are on the interactive map. Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure. See every MIA to SEA date on the interactive map ## Aircraft on the Miami to Seattle nonstop In the schedule table on this page, Delta Air Lines flies the [Airbus A321neo family](https://2lnr.com/seatmaps/dl/a321neo.md). Alaska Airlines flies the [Boeing 737 MAX 9](https://2lnr.com/seatmaps/as/737-max-9.md) and the [Boeing 737-900](https://2lnr.com/seatmaps/as/737-900.md). American Airlines flies the [Airbus A321neo family](https://2lnr.com/seatmaps/aa/a321neo.md). Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure. ## Confirmed upgrade & award space on MIA to SEA departures 2LNR tracks confirmed upgrade and award space on American Airlines, Delta Air Lines, and Alaska Airlines, segment by segment and date by date. Open the calendar for Miami to Seattle to see which departures have space, the next 14 days free on every product and the full horizon on Pro. In the 7 days to October 19, 2026, 2LNR checked award space on Miami to Seattle departures from October 19 to November 1. American Airlines had space open on 10 of 14 dates checked, Delta Air Lines on 14 of 14 and Alaska Airlines on 0 of 14. ### See real availability Confirmed upgrade or award seats by date on the MIA to SEA departures 2LNR tracks, checked against live inventory so you know what's open before you book. ### Set an alert Premium inventory turns over fast. Watch this route on Pro and 2LNR notifies you when space appears on a date you're tracking. ### Plan on the map See MIA to SEA on the interactive route map, with schedules, connections, and route statistics. ## Airlines flying Miami to Seattle nonstop Carriers operating MIA to SEA nonstop in the current schedule. Where 2LNR tracks the carrier, its departures show confirmed upgrade or award space by date. - [American Airlines (AA) route map](https://2lnr.com/routes/airlines/aa.md)\ [The aircraft AA flies](https://2lnr.com/seatmaps/aa.md) - [Delta Air Lines (DL) route map](https://2lnr.com/routes/airlines/dl.md)\ [The aircraft DL flies](https://2lnr.com/seatmaps/dl.md) - [Alaska Airlines (AS) route map](https://2lnr.com/routes/airlines/as.md)\ [The aircraft AS flies](https://2lnr.com/seatmaps/as.md) See MIA to SEA on the interactive map → ## Frequently asked questions about MIA to SEA **How long is the flight from Miami (MIA) to Seattle (SEA)?** Scheduled flight times from Miami (MIA) to Seattle (SEA) run from 6h 41m to 6h 53m across the departures in the schedule table on this page. The nonstop covers about 2,721 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book. **Which airlines fly nonstop from MIA to SEA?** American Airlines, Delta Air Lines, and Alaska Airlines fly MIA to SEA nonstop. 2LNR tracks confirmed upgrade and award space on American Airlines, Delta Air Lines, and Alaska Airlines. **How many flights a week are there from MIA to SEA?** About 26 nonstop flights a week run between Miami (MIA) and Seattle (SEA) in the current schedule, operated by American Airlines, Delta Air Lines, and Alaska Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next. **What time do flights from MIA to SEA depart?** Scheduled MIA to SEA nonstops in the next 7 days with service leave between 18:05 and 20:15, local time at Miami. The schedule table on this page lists every departure by date, with its arrival time and aircraft. **Which flights operate MIA to SEA nonstop?** In the schedule table on this page, MIA to SEA nonstops fly as DL 506 and DL 564 on Delta Air Lines; AA 3252 on American Airlines; and AS 305 on Alaska Airlines. The table lists each departure by date with its times and aircraft. **How do I check upgrade or award availability on MIA to SEA?** Open the MIA to SEA route on the interactive map or the matrix to see confirmed upgrade and award space by date on American Airlines, Delta Air Lines, and Alaska Airlines, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens. Flying the other way? See [SEA to MIA upgrade and award space](https://2lnr.com/routes/sea-mia.md). Award seats rather than schedules? See [American Airlines award availability](https://2lnr.com/awards/aa.md) or [Delta Air Lines award availability](https://2lnr.com/awards/dl.md). Looking beyond this route? See [every route from Miami (MIA)](https://2lnr.com/routes/mia.md), or [every route from Seattle (SEA)](https://2lnr.com/routes/sea.md). Nonstops to Seattle (SEA) from other airports within 150 miles of Miami (MIA): - [Fort Lauderdale (FLL) to Seattle (SEA)](https://2lnr.com/routes/fll-sea.md), 21 miles from MIA - [Fort Myers (RSW) to Seattle (SEA)](https://2lnr.com/routes/rsw-sea.md), 105 miles from MIA Nonstops from Miami (MIA) to other airports within 150 miles of Seattle (SEA): - [Miami (MIA) to Vancouver (YVR)](https://2lnr.com/routes/mia-yvr.md), 127 miles from SEA - [Miami (MIA) to Portland (PDX)](https://2lnr.com/routes/mia-pdx.md), 129 miles from SEA Distances are great-circle between the airports, not driving distance. - [How American upgrades clear](https://2lnr.com/about/aa/upgrades.md) - [How to read award availability by date](https://2lnr.com/guides/award-availability.md) ## Never miss MIA to SEA upgrade or award space See what's open by date on this route, the next 14 days free on every product and the full horizon on Pro. [Get started free](https://2lnr.com/login)